[ManuelW]

Ok, thanks it helps a lot.

Now it works fine with this code

PHP Code:

    $vbulletin->db->query_write("UPDATE+"+.+TABLE_PREFIX+.+"user
                                                    SET+displaygroupid+=+$the_new_group, usergroupid+= $the_new_group, membergroupids+=+''
                                                    WHERE+userid+= $sd_cool_userid");